Planetary hours
in San Antonio.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Wednesday, 10 December 2025: day of Mercury
- Sunrise
- 07:17
- Sunset
- 17:35
- Next sunrise
- 07:18
A day hour lasts 52 min; a night hour, 1h 09m. Local time (America/Chicago).
Day
- 1☿︎ Mercury07:17 – 08:09
- 2☽︎ Moon08:09 – 09:00
- 3♄︎ Saturn09:00 – 09:52
- 4♃︎ Jupiter09:52 – 10:43
- 5♂︎ Mars10:43 – 11:35
- 6☉︎ Sun11:35 – 12:26
- 7♀︎ Venus12:26 – 13:18
- 8☿︎ Mercury13:18 – 14:09
- 9☽︎ Moon14:09 – 15:01
- 10♄︎ Saturn15:01 – 15:52
- 11♃︎ Jupiter15:52 – 16:44
- 12♂︎ Mars16:44 – 17:35
Night
- 1☉︎ Sun17:35 – 18:44
- 2♀︎ Venus18:44 – 19:53
- 3☿︎ Mercury19:53 – 21:01
- 4☽︎ Moon21:01 – 22:10
- 5♄︎ Saturn22:10 – 23:18
- 6♃︎ Jupiter23:18 – 00:27
- 7♂︎ Mars00:27 – 01:35
- 8☉︎ Sun01:35 – 02:44
- 9♀︎ Venus02:44 – 03:52
- 10☿︎ Mercury03:52 – 05:01
- 11☽︎ Moon05:01 – 06:10
- 12♄︎ Saturn06:10 – 07:18
Other cities · United States
Questions
How are the planetary hours calculated in San Antonio?
On Wednesday, 10 December 2025, the Sun rises at 07:17 and sets at 17:35: the day lasts 10h 18m, that is twelve day hours of 52 min. The night, until the next sunrise at 07:18, lasts 13h 43m: twelve night hours of 1h 09m.
Which planet rules the first hour that day?
Mercury, from 07:17 to 08:09: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: the Moon, Saturn, Jupiter, Mars, the Sun, Venus, then Mercury again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.